Fry3DX 0.4: an easy 3D modeller

Shapes with live settings, shape editing, knife and hole tools, drawing
shapes onto other objects, combining objects (add / subtract / overlap),
copies, thickness, painting with stickers and layers, a Layout tab, a
Print tab with checks, packed .fry files with autosave, export to GLB,
glTF, FBX, OBJ, 3MF, STL and PLY, folders in Layers, its own crash
screen, and a website for GitHub Pages in docs/.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NMSrd5oe1GpUD7E6d825KP

engine/platform/touch.h

@@ -0,0 +1,22 @@
+#pragma once
+// Touch controls (phones, tablets, touch screens): while you play, a stick under your left thumb
+// moves, dragging on the right looks, and buttons on the right press the same "+jump",
+// "+attack"... a key would. In menus, touches are taps (SDL turns them into mouse clicks).
+// They show on Android, and anywhere once a finger touches the screen (touch_controls 0: never).
+union SDL_Event;
+
+namespace keel::touch {
+bool active();
+// inGame: playing (the mouse is captured), when touches are controls, not taps.
+void handleEvent(const SDL_Event& ev, bool inGame);
+// The stick: forward and sideways, -1..1.
+void move(float& forward, float& side);
+// Looking since the last call, in mouse pixels (so mouse sensitivity applies).
+void takeLook(float& dx, float& dy);
+// The pause button was pressed (once).
+bool takeEscape();
+// Draws the controls over the game (playing only).
+void draw(bool inGame);
+// Lets go of everything held (a menu opened).
+void releaseAll();
+} // namespace keel::touch